As a non-expert in this field of science, Id caution taking any single study or paper, and perhaps even any single meta-analysis, as an uncertain data point rather than something that determines life decisions.

Wading through all the data, how it was interpreted, and what the pitfalls might be, is extremely complex for epidemiology and in fact any human study.

Science is a self-correcting process, but for there to be corrections there must be errors first!